光纤陀螺热致漂移分析及算法补偿技术研究  

Thermal-Induced Drift Analysis and Algorithm Compensation Technology of Fiber Optic Gyroscope

作　　者：冷悦 钟胜[1,2] Leng Yue;Zhong Sheng(School of Artificial Intelligence and Automation,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China;National Key Laboratory of Multispectral Information Intelligent Processing Technology,Wuhan 430074,Hubei,China;Wuhan National Laboratory for Optoelectronics,Huazhong Institute of Electro-Optics,Wuhan 430223,Hubei,China)

机构地区：[1]华中科技大学人工智能与自动化学院,湖北武汉430074 [2]多谱信息智能处理技术全国重点实验室,湖北武汉430074 [3]华中光电技术研究所武汉光电国家研究中心,湖北武汉430223

出　　处：《光学学报》2024年第2期127-134,共8页Acta Optica Sinica

摘　　要：通过对光纤陀螺温度漂移的剖析推导,分析了温度扰动引起陀螺漂移误差的深层次原因,并结合过程相关性理论,对各个温度项影响因子与光纤陀螺实际输出相关性进行验证分析,提出一种同时考虑温度、温变速率、温度梯度以及三者乘积耦合项的算法补偿模型。对该模型的补偿效果进行离线补偿验证,结果表明,采用该算法补偿模型能明显抑制光纤陀螺的变温零漂。为了进一步验证该模型的有效性,把离线获得的补偿参数载入陀螺存储器,经过多样本实验测试,补偿后可有效提高光纤陀螺的全变温零偏稳定性,验证了该补偿算法在工程上的可实施性和推广价值。Objective Due to the advances in polarization-maintaining fiber technology,coil-winding process technology,and other optical fiber device technologies,high-precision fiber optic gyroscopes have been made possible for high-volume applications in navigation.However,in many unmanned vehicle platforms,the size,weight,power consumption,and cost control of the navigation system have high requirements,so it is not operable to suppress the temperature drift problem of fiber optic gyroscopes by adding a temperature control system.The fiber optic coil is the core component of the fiber optic gyroscope,but its preparation process requires the intervention of manual operation,resulting in a difference and poor consistency in product design and finished product,and its performance will deteriorate due to the external temperature perturbation.Although the development of low-temperature-sensitive optical fiber can improve the winding process to improve symmetry,optimize the cavity structure design,and slow down the rate of temperature perturbation to strengthen the gyroscope's self-suppressing ability of temperature drift,the gyroscope's temperature performance degradation caused by some human factors,device defects,and other factors is still unable to be effectively solved.Based on this,by relying on the fiber optic gyroscope system platform,we find the relationship between gyroscope output and temperature and other related factors and use algorithmic compensation to weaken thermally induced error effects of fiber optic gyroscopes.In this thesis,we start from the mechanism level and discuss and deduce in detail the deep-seated reasons for the deterioration of gyroscope performance due to the phase error caused by the temperature influence of the fiber optic coil,which is the core component of the fiber optic gyroscope,and we carry out the process correlation analysis of the influence of the temperature factors and put forward a new type of zero-drift polynomial temperature compensation model that can be realized in an engineer

关 键 词：光纤光学 光纤陀螺 Shupe效应 光纤环圈 温变速率 补偿算法 

分 类 号：TH741[机械工程—光学工程]